[Poppler-bugs] [Bug 59636] New: vertical quote marks not displayed in computer code representation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=59636

          Priority: medium
            Bug ID: 59636
          Assignee: poppler-bugs at lists.freedesktop.org
           Summary: vertical quote marks not displayed in computer code
                    representation
          Severity: major
    Classification: Unclassified
                OS: Linux (All)
          Reporter: pauljohn at ku.edu
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: general
           Product: poppler

Created attachment 73342
  --> https://bugs.freedesktop.org/attachment.cgi?id=73342&action=edit
a pdf in which the vertical quote mark is invisible when rendered

Documents that use type writer font with vertical single quote are IMPOSSIBLE
to read in Evince because the single quotes are invisible. I mean the symbol ',
not the grave or slanted quote mark.  That symbol does show in Adobe Acrobat
reader, so I know it is there, but Evince viewer doesn't show it. 

This is happening on Debian Wheezy Beta 4. That supplies poppler libraries
0.18.4 and Evince version  3.4.0

I tried to report this to the Evince team, but they send me here, claiming that
rendering is done by Poppler.

Why this is important?  Documents about computer programming that use the
single quote in code examples are impossible to read.  
I'm attaching one example PDF.  To see the problem, go to page 7, in the shaded
code example in section 2.8, the function has a single quote in it

> cppFunction('
int fibonacci(const int x) {

and one at the end. 

Incredibly, I just cut and pasted that from Evince and it shows the ' is really
there, it just does not show on the screen.

What else do I know about this?  I know the troublesome documents are created
by LaTeX, and I suspect that the LaTeX "ae" package is used for the type writer
fonts.  I also know that the pdf file does have the fonts embedded. 

Acrobat does show this symbol. 

On a  lark, I have also installed some other pdf viewers. Okular does show it.
As far as I can see, that does not use Poppler.

I was advised to test xpdf as well. That one works as well. That's confusing.
Doesn't xpdf depend on libpoppler. So if the symbol shows in xpdf, does that
mean we should be looking for the bug in Evince, not Poppler? 

To me, this is major major, a show stopper, if I am complaining to the wrong
people (again), please let me know, I will complain elsewhere :)

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